spenglee



(NoModel.)

C. G. SPENGLER,

l PEN. No. 299,283. Patented May 27, w84.

@@ww' mM/QQ,

n Pimm. Pmmmgnnw. wann-gm. u.c.

e ilnrrn CHRISTIAN G. SPENGLER, OF HOBOKEN, NEV JERSEY, ASSIGNOR TO JAMES DIOKIE, OF BROOKLYN, NEW" YORK.

PEN.

SPECIFICATION forming part of Letters Patent No. 299,283, dated May 27, 1884-.

Application filed August 1G, 1853.

To all whom, t may @0n/cern.:

Be itY known that I, CHRISTIAN G. SPENG- LER, of Hobokemin the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Pens, of which the following is a specication.

The principal object of my improvement is to produce a pen suitable for continued use in instruments wherein telegraphie messages are delineated with an ink or a liquid that is a nonconductor of electricity upon a roller made of material which is a conductor of electricity, so that the roller may be subse quently transferred to a machine, and there rotated rapidly for the purpose of transmitting the messages to a distant point; but my invention is also applicable to pens for painting` or marking on glass and certain other materials.

The improvement consists in the combination, in a pen, of a tube of rigid material and a tubular point-sectiou made of indiarubber, slightly smaller internally than the exterior of the end portion of the rigid tube and slipped over the same, and having an elliptical or ellipsoidal lower end.

In the accompanying drawings, Figure l is a side view oi' a pen embodying my improvement and adapted for use in an instrument such as I have described. Fig. 2 is a side view of a pen embodying my improvement, and especially adapted for marking on or other rigid and suitable material.

glass and Fig. 3 is aview illustrating the end of each pen.

Similar letters of reference designate corresponding parts in all the figures.

In each example of my improvement, A designates atube,which may be made of metal Brass is preferred for its construction. This tube may be round or of any other desirable shape, and is to be sufliciently large internally to permit ink of a sirupy consistency, or paint, to flow through it. This tube is generally to be connected by a flexible pipe made of indiarubber or other suitable materiahwith a reservoir whence the ink or paint will be supplied to it.

The tube A, in each example of my improvement, has a point-section consisting of a short tube, B, of india3rubber, made elliptical or ellipsoidal at the lower end. This (No model.)

point-section may be first made round, and then molded into elliptical or ellipsoidal form by the aid of heat and pressure, or it may be made elliptical or ellipsoidal in the course of manufacture in any suitable way. The pointsection is made slightly smaller internally than the exterior of the end portion of the-tube and is slipped over the latter.

The lower end of the tube A will preferably be reduced externally, so that the pointsection may be slipped over it, and when slipped over it will be retained there by inherent elasticity,causing the same to hug tightly. 6 5

The making of the point-section B elliptical or ellipsoidal is advantageous for many reasons. Being of rounded form in cross section, it forms a continuous spring around its entire circumference, and is very iiexible at 7o all points, there being no corners which offer an increased resistance to iiexure.` It is not liable to become clogged, because it has no corners in which sediment can lodge, and because its iiexure at all points in its circumference will tend to work out any sediment which might ,clog it; hence the pen is particularly suitable for a thick non-conducting ink in instruments ofthe kind before described. The elliptical or ellipsoidal point-section is 8o also advantageous, because it can be moved with equal facility over the paper or other Writing-surface Without catching, Whether the maj or axis of the section be parallel with the surface or not, and the point-section, when in any position, Will have asufiiciently broad bearing on the Writingsurface to Workproperl'y. The elliptical or ellipsoidal point-sec tion will accommodate itself readily to any irregularities or inequalities in the Writing-sur- 9o face.

W'hat I claim as my invention, and desire to secure by Letters Patent, is-

In a pen, the combination of a tube of rigid material and a tubular point-section made of india-rubber, slightly smaller internally than the exterior of the end portion of the rigid tube and slipped over thesame, and having an elliptical or ellipsoidal lower end, substantially as herein described.

CHRISTIAN G. SPENGLER. Titnessesz T. J. KEANE,

` Jarras R. BOWEN. 

